Writing instrument



FIG. 1 is a front view of my design;

FIG. 2 is a back view thereof;

FIG. 3 is a side view taken from the left side thereof;

FIG. 4 is a side view taken from the right side thereof;

FIG. 5 is a top view thereof (enlarged for clarity);

FIG. 6 is a bottom view thereof (enlarged for clarity); and,

FIG. 7 is an enlarged side view of the top portion of FIG. 4, to enhancethe details shown in FIG. 4.

The broken line on the bottom of the enlarged side view of FIG. 7 isshown for environmental purposes only and forms no part of the claimeddesign.

An ornamental design for a writing instrument, as shown and described.